M1: 57,7°C, HS1: 58,5°C
M1 is the "all in one" chip. HS1 must be the "kick back" handling.

HS1: 63,7°C
HS1 is the white blob between the transformer and the box, it improves the heat transfer.30-jul-2017 15:2130-jul-2017 15:21

HS1: 51,8°C
HS1 is the transformer.

M1: 56,0°C, M2: 50,1°C, M3: 49,3°C, HS1: 62,4°C

At 0.5A the noise is 21mV rms and 450mVpp

At 1A the noise is 32mV rms and 437mVpp

At 2A the noise is 35mV rms and 450mVpp

At 0.5A the noise is 40mV rms and 467mVpp

Tear down

My vice could not open this charger, I had to cut it open.

At the mains input is a fuse (FR1) in heat shrink. There is two inductors (L1 & L2), one is green and the other is just a ferrite bead around a wire. The blue capacitor (C1) is the safety capacitor. On the low volt side is a two color led.

On the first image the fuse can be seen. The transformer has a plastic around it, this can be seen on both images.
The output capacitor is 16V, this is needed because QC can deliver 12V.

On the first image the safety capacitors can be seen. Between the usb connector and a diode there is some black plastic, probably because they got placed a bit too close.
On the second picture a plastic shield is hiding most of the electronic, it is between the electronic and the mains input and prevents any shorts.

Here there is a lot of stuff. At the input is the bridge rectifier (BD1), there is the big power supply chip (U1: SC1223K), the QC2 controller (U2: CHY100), a synchronous rectifier transistor (Q1) and one more chip?
It is a OpAmp and reference (U3: TSM103AIW) and is used for the dual color led (That led requires an extra chip and a couple of other parts).

Safety distance look good.

Testing with 2830 volt and 4242 volt between mains and low volt side, did not show any safety problems.

Conclusion

The charger can deliver an acceptable about of power at 5V and Quick Charge V2.0 for faster charging. It is a nice little detail with the QC indicator, i.e. no guessing if the phone/tablet uses QC, just look at the led, the noise is slightly high.
Safety also looks good.